In this handout photo taken on April 19, 2016, and released on Oct. 31, 2017 by the Valdai Club foundation, Joseph Mifsud, a politics professor attends the Valdai Discussion Club Conference following the results of the closed-door Iran-Russia discussion in Moscow. Mifsud is suspected of being a key link between the Russian government and the Donald Trump campaign, but Mifsud, identified solely as “the London professor” in court documents _has kept a low profile in London academic circles. (valdaiclub.com via AP)